CN106730406A - A kind of dentistry laser therapeutic apparantus - Google Patents

Abstract

The invention discloses a kind of dentistry laser therapeutic apparantus, including power module, the power module includes battery and power detecting unit；Display screen and control system, including：It is used to set up the communication unit of wireless near field communication；For performing the execution unit and touch-display unit of asking output wavelength laser beam according to described；Laser generator, can launch 520 560nm laser, preferably 540nm；Refrigeration system, the correspondence laser generator is set；Laser pen, for the laser beam that the laser generator is exported to be exposed into region to be operated.

Description

Dental laser therapy instrument

technical field

The invention relates to a dental laser treatment instrument, which belongs to the field of medical equipment.

Background technique

Common oral diseases include infectious diseases (such as chronic periodontal disease, peri-implantitis and oral mucosal infection) and non-infectious diseases (such as tooth sensitivity caused by tooth wear). Epidemiological surveys show that the incidence rates of these two types of diseases are as high as 90% and 57% respectively. So far, there is still a lack of effective treatment methods, and the cure rate is less than 20%, which seriously affects the quality of life of patients and may induce and aggravate cardiovascular and cerebrovascular diseases. risk, endangering the life of the patient. Pain, slow healing, and easy recurrence are the common clinical problems of these two diseases. Traditional physical and chemical methods can achieve short-term curative effect, but the long-term recurrence rate is high.

In daily life, teeth often experience numbness and pain due to the influence of cold, hot, sour and sweet. This is what we call tooth sensitivity. It refers to the transient and sharp tooth pain symptoms caused by exposed dentin being subjected to external stimuli such as temperature, chemical, mechanical, osmotic pressure, etc., but it cannot be attributed to any other form of tooth defect or lesion. There are many reasons for tooth sensitivity (DH), including various pathological and physiological factors that cause loss of enamel or cementum, and exposure of dentin, such as abrasion, gingival recession, improper brushing methods, excessive intake of acidic foods, etc. .

Periodontitis is mainly a chronic inflammation of periodontal supporting tissues caused by local factors. If gingivitis is not treated in time, the inflammation can spread from the gums to the deep layer of the periodontal ligament, alveolar bone and cementum and develop into periodontitis.

With the growth of age, the frequency of tooth sensitivity and periodontitis becomes more and more prominent, which seriously affects people's quality of life. Therefore, it is very necessary to research and develop a safe and effective laser treatment device that treats both symptoms and root causes.

Contents of the invention

In view of the problems existing in the background technology, the purpose of the present invention is to provide a dental laser therapy instrument, which can directly irradiate the light of a certain energy to the teeth, and play a role in treating tooth sensitivity and chronic periodontal disease.

Photobiomodulation (Photobiomodulation, PBM) is a common technology that uses low-energy lasers of different specific wavelengths to activate the mitochondria of body cells, block pain transmission, and laser antibacterial. When the body cells are in a poor state of low nutrition, the effect is better. , so this technology is especially suitable for the clinical treatment of common oral diseases.

After a lot of experimental research, it was found that using an ultra-low energy laser with a wavelength of about 540nm, such as 520-560nm, to block the protein TRPV1 responsible for pain transmission in the nerve synapses in the dentinal tubules, increase the pain threshold of the dentine, and block pain transmission. Reduce pain in DH patients, so that short-term efficacy can be achieved.

The study also found that lasers with a wavelength of about 980nm, such as 960-1000nm, have the same principle as lasers with a wavelength of about 540nm in the treatment of tooth sensitivity. They can also block pain transmission, relieve pain in DH patients, and achieve short-term curative effect.

Studies have shown that using the tissue regeneration function and high penetration of low-energy infrared lasers with a wavelength of about 808nm, such as 788-828nm, can promote the production of a large amount of ATP in the dental pulp cells near the pulp, and improve the mitosis and osteogenic differentiation of dental pulp cells (towards osteogenesis). Odontoblast differentiation); greatly increase the proliferation rate of vascular endothelial cells, ensure the blood supply of the dental pulp, thereby promoting the formation of the third phase of dentin, achieving the purpose of treating dentin hypersensitivity, and maintaining long-term efficacy.

Studies have also shown that using a wavelength of about 808nm, such as 788-828nm, can not only activate dental pulp stem cells to form third-stage dentin and reduce the recurrence rate of dentin sensitivity, but also activate periodontal ligament cells and epithelial cells to promote periodontal tissue regeneration.

Studies have also shown that irradiating teeth with the thermal effect generated by low-energy infrared lasers with a wavelength of about 1064nm, such as 1044-1084nm, can increase the surface temperature of the teeth without causing adverse stimulation to the dental pulp, and melt and recrystallize on the tooth surface to seal the dentin Small tubes, isolated from external stimuli without damaging the dental pulp, can guarantee the medium-term curative effect.

The inventor also surprisingly found through research that using three wavelengths (such as 520-560nm preferably 540nm, 788-828nm preferably 808nm and 1044-1084nm preferably 1064nm or 960-1000nm preferably 980nm, 788-828nm preferably 808nm and 1044-1084nm preferably 1064nm) The laser treatment of patients with tooth sensitivity, that is, the combination of the above short, medium and long-term treatment methods, seems to have a certain synergistic effect, and its effect is not simply superposition, which can achieve better treatment results.

The inventors have also found that using two-wavelength lasers to treat patients can also produce a certain synergistic effect. Using a wavelength of about 540nm, such as 520-560nm and 1064nm, such as 1044-1084nm, can precisely control and regulate the pain transmission signal pathway to achieve immediate pain relief. Among them, a wavelength of about 980nm, such as 960-1000nm, can replace lasers with a wavelength of about 540nm, such as 520-560nm Generator: The use of wavelengths around 808nm, such as 788-828nm and 415nm, such as 395-435nm, can activate the cellular immune mechanism and effectively kill pathogenic bacteria to achieve the purpose of treating periodontitis.

Blue light therapy is a new anti-infection light therapy. It is generally believed that there are endogenous photosensitive substances in the bacteria, which can be excited by blue light, generate reactive oxygen species through photochemical reactions, and act on important functional macromolecules such as proteins and nucleic acids in the bacteria. Compared with photodynamics, blue light therapy does not require the use of exogenous photosensitizers, so it is not limited by the absorption and penetration depth of photosensitizers; compared with short-wave ultraviolet UVC, blue light does not directly act on DNA, so it induces tissue cell genes The risk of mutation is small, and its ability to penetrate skin and tissue is stronger than UVC, and its range of action is larger. Studies have found that blue light with a wavelength of 415nm has a killing effect on bacteria in the oral cavity.

The inventor also surprisingly found through research that using lasers with three wavelengths (such as 788-828nm, preferably 808nm, 395-435nm, preferably 415nm, and 520-560nm, preferably 540nm) to treat patients with chronic periodontal disease seems to produce some synergy. Effect, its function is not a simple superposition, can achieve better treatment effect.

Based on the above findings, the present invention provides a dental laser treatment apparatus, comprising: a laser generator capable of emitting 520-560nm laser, preferably 540nm.

In a dental laser therapeutic apparatus according to the present invention, the laser generator can also emit 788-828nm, preferably 808nm laser, and 395-435nm, preferably 415nm laser.

In a dental laser therapeutic apparatus according to the present invention, the laser generator can also emit 788-828nm, preferably 808nm laser, and 1044-1084nm, preferably 1064nm laser.

In a dental laser treatment apparatus according to the present invention, the laser generator can also emit a laser generator of 960-1000nm laser, preferably 980nm, or include a laser capable of emitting 960-1000nm, preferably 980nm laser The generator can replace the laser generator capable of emitting 520-560nm laser.

In a dental laser therapeutic apparatus according to the present invention, the therapeutic apparatus further includes: a power supply module, including a storage battery and a power detection unit; a display screen and a control system, including: a communication unit for establishing short-distance wireless communication , an execution unit and a touch display unit for outputting a laser beam of a wavelength according to the execution request; a cooling system, which is set corresponding to the laser generator; a laser pointer, which is used to irradiate the laser beam output by the laser generator to the operating area.

In the dental laser therapeutic apparatus according to the present invention, the therapeutic apparatus further includes: a foot switch, which establishes a wireless communication connection with the display screen and the communication unit of the control system, and is used to trigger the laser generator.

In a dental laser treatment apparatus according to the present invention, the touch display unit is a 7-inch resistive touch screen.

Beneficial effects of the present invention:

The new laser waveband discovered can be used to treat or alleviate oral diseases; the laser therapy instrument uses lasers of three wavelengths synchronously for the treatment of tooth sensitivity, which can significantly reduce the pain caused by tooth sensitivity;

The operation is safe and simple, and it is worthy of clinical promotion and use.

Description of drawings

Fig. 1 is the structural block diagram of dental laser therapy instrument of the present invention;

Figure 2 is an effect diagram of killing oral pathogenic bacteria by blue light with a wavelength of 415nm;

Fig. 3 is for adopting placebo, desensitizing toothpaste, different wavelength and multi-wavelength laser therapy instrument after the pain degree value change;

Figure 4 shows the changes in periodontal probing depth after treatment with single-wavelength and multi-wavelength laser therapeutic instruments.

Drawing description mark:

11-power supply module, 111-storage battery, 113-power detection unit,

12-laser generator, 13-refrigeration system, 17-foot switch, 18-laser pointer,

15-display screen and control system, 151-communication unit, 153-execution unit,

155-touch display unit, 19-indicator light.

detailed description

As shown in FIG. 1 , a structural block diagram of the laser therapeutic apparatus of the present invention is disclosed. The dental laser therapy instrument 1 includes: a power module 11 , a laser generator 12 , a refrigeration system 13 , a display screen and a control system 15 , a foot switch 17 and a laser pointer 18 .

The power module 11 includes a battery 111 and a power detection unit 113 . The storage battery 111 can provide a variety of different DC power supply voltages according to the conditions of each power consumption unit. After being rectified and filtered by the storage battery 111 , a stable DC current can be obtained, which can be applied to the power supply of the laser generator 12 and the refrigeration system 13 .

In addition, to ensure normal operation, the power supply module 11 further includes a power detection unit 113 connected to the storage battery 111 for detecting the current power of the storage battery 111 . The power detection unit 113 sends out a warning message (in one embodiment, the warning message may be flashing or displayed in a specific color) when it detects that the current charge of the storage battery 111 is less than a preset value, to remind the operator The current power condition of the storage battery 111 , so that the operator can decide whether to charge the storage battery 111 according to the warning information.

The laser generator 12 is used to emit laser light; the transmission fiber connected to the laser generator 12 is used to conduct the laser light generated by the laser generator 12; the laser pointer 18 at the end of the transmission fiber is connected to the transmission fiber The laser beam emitted by the laser generator 12 is used to treat the treatment object; after the output power of the laser generator 12 is set, the laser generator 12 is started to generate laser light. The laser is coupled into the transmission fiber through the coupling device; it is guided to the affected part by the transmission fiber, and the treatment object is treated in real time. In the present invention, the laser generator 12 may be a laser diode. Laser diodes are based on light-emitting diodes, with an optical resonant cavity inside, and the light emitted is single-wavelength light with high intensity and good directionality.

The laser generator 12 is controlled by the execution unit 153 to generate and sequentially output laser beams with wavelengths of 540nm, 808nm and 1064nm or laser beams of 980nm, 808nm and 1064nm. The operator steps on the pedal. After the pedal is subjected to a downward force, the laser generator emits laser light with a wavelength of 540nm. After the laser pointer irradiates the teeth of the human body, the execution unit receives Instructions, the laser generator shuts down and emits a 540nm laser; step on the pedal again, the laser generator emits a laser with a wavelength of 1064nm, after the laser pointer irradiates the teeth of the human body, the pedal is subjected to an upward force, and the laser generator is turned off Emit 1064nm laser; step on the pedal for the third time, the laser generator emits laser light with a wavelength of 808nm, after the laser pointer irradiates human teeth, the pedal is subjected to an upward force, the laser generator turns off and emits 808nm laser . In the above description, there is no limitation on the sequence of the wavelengths. Those skilled in the art know how to control the laser generator 12 to sequentially emit three-wavelength laser beams by the execution unit 153 under the instruction of the foot switch 17 .

The light-emitting mechanism of a laser diode is stimulated light, that is, the resonant cavity in the laser diode is used to oscillate to excite many photons of the same frequency, thereby forming laser light. Two mirrors parallel to each other are processed on both sides of the PN junction by semiconductor technology. These two mirrors and the original two cleavage planes (natural crystal planes of the crystal) form a resonant cavity structure. When a positive bias voltage is applied across the laser diode, photons are released due to the recombination of electrons and holes in the PN junction region. When some of the photons move along the direction perpendicular to the mirror surface, they will be reflected by the mirror surface and reciprocate in the resonant cavity. As long as the external positive bias current is large enough, the reciprocating motion of photons will excite more photons with the same frequency, that is, oscillation occurs, and laser light is emitted.

The transmission optical fiber has the characteristics of easy coupling, light weight, and easy bending under the condition of satisfying the transmission. It can be one or more. Considering the volume of the overall device, two optical fibers can also be selected in this embodiment. When one of the optical fibers fails, the device can still be used normally, which improves the performance of the device. stability.

The refrigeration system 13 is used to dissipate heat from each heating unit (such as a laser generator) in the dental laser treatment apparatus 1 of the present invention, so as to ensure normal operation. After the dental laser therapy instrument 1 is turned on and entered, the refrigeration system 13 begins to execute the refrigeration program; no matter whether the laser generator 12 works or not, the feedback output of the laser generator 12 is detected in real time; the detected feedback output of the laser generator 12 changes, That is, it is judged whether the amount of change of the feedback output of the laser generator 12 exceeds the preset threshold value; if it is judged that the amount of change of the feedback output of the laser generator 12 does not exceed the preset threshold value, then continue to detect; If the variation of the feedback output of laser generator 12 exceeds the preset threshold, the output power of refrigeration system 13 is adaptively adjusted according to the variation of feedback output of laser generator 12 . The adaptive adjustment of the output power of the refrigeration system 13 includes: when the output fed back by the laser generator 12 becomes larger, the display screen and the control system 15 control the refrigeration system 13 to increase the output power; When the output value of the feedback becomes smaller, the display screen and the control system 15 control the refrigeration system 13 to reduce the output power.

The display screen and control system 15 includes a communication unit 151 , an execution unit 153 and a touch display unit 155 . The touch display unit 155 is used as an input and output interface for providing and displaying relevant system parameter information, and issuing execution and/or update requests after receiving corresponding setting and/or manipulation actions. In the present invention, the setting of equipment parameters can be realized through the display screen and the control system 15 . In this embodiment, the display screen and control system 15 is a 7-inch resistive touch screen. The present invention can use the touch display unit 155 to adaptively set device parameters, providing greater selectivity and better pertinence.

The triggering of the laser generator can be performed through an external switch, for example, in the form of a foot switch. The foot switch 17 establishes a wireless communication connection with the display screen and the control system 15 for triggering the laser generator. In this embodiment, there is a communication unit 151 for establishing short-range wireless communication in the display screen and control system 15, and the communication unit 151 establishes a wireless communication connection with the foot switch 17. The wireless communication unit can be, for example, WLAN, WiMax or Bluetooth technology. The foot switch 17 sends an instruction through the switch, and the communication unit 151 receives the information instruction, and then sends it to the execution unit to execute the instruction to switch the laser generator 12 on and off.

The foot switch 17 is used to trigger the laser generator 12 . The foot switch 17 can provide a pedal, and the operator can step on the pedal with his foot, and utilize the down and up movements of the pedal to respectively realize the opening and closing of the laser generator 12 . Specifically, if the pedal remains in an initial static state, the laser generator 12 is turned off; when the pedal moves downward after being stressed, the laser generator 12 is triggered to output a laser beam. In addition, the frequency at which the pedal in the foot switch 17 moves up and down determines the frequency at which the laser generator 12 is turned on or off.

The laser pointer 18 can be connected with the laser generator 12 through an optical fiber, and is used for irradiating the laser beam output by the laser generator 12 to the area to be operated in the oral cavity. In this embodiment, the end of the laser pointer 18 is connected to an optical fiber, and the other end of the optical fiber is configured with an adapter, and the laser generator 12 is connected to the laser generator 12 through the adapter. In actual operation, when the operator connects the adapter port of the optical fiber with the port of the laser generator 12, if the connection between them is normal, a prompt of correct configuration will be given (for example, the indicator light 19 in the indicator light prompt shows green), if they are improperly connected or abnormally connected, an indication that a configuration error needs to be reconnected will also be given (for example, the indicator light 19 in the indicator light prompts is yellow). Specifically, the end optical fiber of the laser pointer 18 is an optical fiber that can support an optical aperture with a diameter of 200 μm, 300 μm, 400 μm, 600 μm, 800 μm or 1000 μm.

Studies have found that blue light of a certain wavelength, such as 395-435nm, has a killing effect on Staphylococcus aureus, oral pathogens, Helicobacter pylori and other important pathogens. As shown in Figure 2, using a wavelength of 415nm blue light to kill oral pathogens, with the increase of blue light exposure, Porphyromonas gingivalis (curve 1 in Figure 2), Streptococcus mutans (curve 2 in Figure 2) And the surviving numbers of A. actinomycetes (curve 3 in FIG. 2 ) decrease until 10*(-7).

experiment:

The present invention recruited 40 patients with tooth sensitivity as test volunteers. The test was carried out between December 2015 and December 2016. Among the 40 patients, they were between 27 and 88 years old, with an average age of 57.64 years. Randomly divided into: 5 cases in the comparison group 1, 5 cases in the comparison group 2, and 30 cases in the treatment group. Among them, the treatment group is divided into 6 groups, and there is no significant difference in gender, age, disease condition and other data among each group, which are comparable.

The test results are shown in Figure 3. One end of the vertical axis of the coordinate axis is 0, indicating no pain; the other end is 10, indicating severe pain; the middle part indicates different degrees of pain. The average value of mild pain was 2.57±1.04; the average value of moderate pain was 5.18±1.41; the average value of severe pain was 8.41±1.35. The grading and testing methods of pain scores are well known to those skilled in the art.

The patients in each group were all patients with severe pain at the beginning. After treatment, the patients were followed up regularly. The process is as follows:

Compared with the method of group 1: patients took placebo, one pill each time, once in the morning and once in the evening, and observed the effect. Prevention and treatment effect: as shown in curve 1 in Figure 3, the pain degree value of the patient remained basically unchanged within 3 months, and it was always severe pain.

The method of comparison group 2: use desensitizing toothpaste, the rest is the same as conventional tooth brushing, brush your teeth for 5 minutes each time, once in the morning and in the evening, and observe the effect. Prevention and treatment effect: as shown in curve 2 in Figure 3, the pain level of patients in the comparison group 2 decreased from severe pain to moderate pain after using the desensitizing toothpaste for 1 day, but in the following 3 months, the pain level value continued to increase , to severe pain, so it can be proven that the desensitizing toothpaste only maintains a short-term effect.

The method of treatment group 1: the laser wavelength of the laser therapy instrument is 980nm, the terminal output power does not exceed 300 mW, each irradiation is 6 minutes, once in the morning and evening, and the effect is observed. Prevention and treatment effect: as shown in curve 3 in Figure 3, the pain level value decreased to moderate pain after 1 day after treatment with a laser therapeutic instrument with a wavelength of 980nm, but in the following 3 months, the pain level value continued to rise in a straight line. Severe pain is achieved, so it can be seen that the 980nm laser therapy instrument can achieve short-term curative effect.

The method of treatment group 2: the laser wavelength of the laser therapy instrument is 540nm, the terminal output power does not exceed 300 milliwatts, each irradiation is 6 minutes, once in the morning and evening, and the effect is observed. Prevention and treatment effect: as shown in curve 4 in Figure 3, using a laser therapy device with a wavelength of 540nm for treatment, the pain level decreased to mild pain after 1 day, but within the next 3 months, the pain level increased linearly. It can be seen that the 540nm laser therapy instrument can achieve short-term curative effect; therefore, it can be seen that the mechanism of using a laser toothbrush with a wavelength of 540nm and a wavelength of 980nm is similar, and a short-term curative effect can be achieved.

The method of treatment group 3: the laser wavelength of the laser therapy instrument is 808nm, the terminal output power does not exceed 300 milliwatts, each irradiation is 6 minutes, once in the morning and evening, and the effect is observed. Prevention and treatment effect: as shown in curve 5 in Figure 3, using a laser therapy device with a wavelength of 808nm for treatment, the pain level decreased to moderate pain after 1 day, and this pain level can be maintained for 1 month, and the pain level within 3 months The value is reduced to achieve mild pain; therefore, it can be seen that the 808nm laser therapy device can guarantee long-term curative effect.

The method of treatment group 4: the laser wavelength of the laser therapy instrument is 1064nm, the terminal output power does not exceed 300 mW, and each irradiation is 6 minutes, once in the morning and evening, and the effect is observed. Prevention and treatment effect: as shown in curve 6 in Figure 3, using a laser therapy device with a wavelength of 1064nm for treatment, the pain level will be reduced to mild pain after 1 day, and this pain level can be maintained for 7 days, and the pain level will be reduced to 3 months later. It can be seen that the 1064nm laser therapy device can guarantee the medium-term curative effect.

The method of treatment group 5: the laser wavelength of the laser therapy instrument is 540nm, 1064nm and 808nm, and the terminal output power is not more than 300 milliwatts. The generator emits a laser with a wavelength of 540nm, and the laser pointer irradiates the teeth of the human body for 2 minutes. After the pedal receives an upward force, the laser generator turns off and emits a 540nm laser; step on the pedal again, and the laser generator emits a laser with a wavelength of 1064nm The laser pointer irradiates the human teeth for 2 minutes. After the pedal is subjected to an upward force, the laser generator turns off and emits a 1064nm laser; the third time the pedal is stepped on, the laser generator emits a laser with a wavelength of 808nm. The pen irradiates the teeth of the human body for 2 minutes. After the pedal is subjected to an upward force, the laser generator turns off and emits 808nm laser light. Once in the morning and evening, observe the effect. Prevention and treatment effect: as shown in curve 7 in Figure 3, after the patient is treated with the multi-wavelength laser therapy device, the pain level value is reduced to mild pain and remains unchanged. Therefore, it can be seen that the laser therapy device has long-term curative effect on patients.

The method of treatment group 6: the laser wavelength of the laser therapy instrument is 980nm, 1064nm and 808nm, and the terminal output power is not more than 300 milliwatts. The generator emits a laser with a wavelength of 980nm, and the laser pointer irradiates the teeth of the human body for 2 minutes. After the pedal receives an upward force, the laser generator turns off and emits a 980nm laser; step on the pedal again, and the laser generator emits a laser with a wavelength of 1064nm The laser pointer irradiates the human teeth for 2 minutes. After the pedal is subjected to an upward force, the laser generator turns off and emits a 1064nm laser; the third time the pedal is stepped on, the laser generator emits a laser with a wavelength of 808nm. The pen irradiates the teeth of the human body for 2 minutes. After the pedal is subjected to an upward force, the laser generator turns off and emits 808nm laser light. Once in the morning and evening, observe the effect. Prevention and treatment effect: as shown in curve 8 in Figure 3, after the patient is treated with the multi-wavelength laser therapy device, the pain level value is reduced to mild pain and remains unchanged. Therefore, it can be seen that the laser therapy device has a long-term curative effect on the patient.

Through the treatment test of many patients, it is proved that the desensitizing toothbrush has a therapeutic effect on those with sensitive teeth, the total effective rate is 100%, and the cure rate is 100%.

The present invention also recruited 25 periodontitis patients as volunteers for the test, and conducted the test between December 2015 and December 2016. Among the 40 patients, the age was between 27 and 88 years old, and the average age was 60.16 years old. . Randomly divided into: 5 cases in the control group and 20 cases in the treatment group. Among them, the treatment group was divided into 4 groups, and there were no significant differences in gender, age, disease condition and other data among the groups, which were comparable.

Control group: no treatment with laser therapy instrument;

Treatment groups 1-3 were treated with laser therapy devices with wavelengths of 540nm, 415nm, and 808nm respectively. The specific method: each time irradiated for 6 minutes, once in the morning and once in the evening, and observed the effect after 3 months.

Treatment group 4 was treated with a laser therapy device with three wavelengths (540nm, 415nm and 808nm). The specific method: each wavelength was irradiated for 2 minutes, once in the morning and once in the evening, and the effect was observed after 3 months.

PD is the periodontal probing depth, which refers to the depth at which the probe can be painlessly inserted into the gingiva, and is an important sign for clinical evaluation of periodontal destruction. The use of ΔPD to characterize periodontitis disease is well known to those skilled in the art.

As shown in Figure 4, the ordinate △PD refers to the change value of periodontal probing depth after 3 months. It can be seen from the figure that △PD is a negative value when no laser irradiation of any wavelength is used to treat periodontitis, indicating that periodontitis is more serious without intervention; after 540nm, 415nm and 808nm laser irradiation, respectively, △PD is less than 4, it can be seen that periodontitis can be controlled after laser irradiation with different wavelengths; when 540nm, 415nm and 808nm three-wavelength laser treatment equipment is used for treatment, △PD is greater than 4, indicating that three-wavelength lasers are used The therapeutic instrument has the best effect in treating periodontitis.

Claims (7)

1. A dental laser therapy instrument, comprising: A laser generator capable of emitting 520-560nm laser, preferably 540nm. 2. Therapeutic instrument according to claim 1, characterized in that, The laser generator can also emit 788-828nm, preferably 808nm laser, and 395-435nm, preferably 415nm laser. 3. The therapeutic apparatus according to claim 1, characterized in that, The laser generator can also emit 788-828nm, preferably 808nm laser, and 1044-1084nm, preferably 1064nm laser. 4. The therapeutic apparatus according to claim 3, characterized in that, The laser generator can also emit a laser generator of 960-1000nm laser, preferably 980nm, or include a laser generator capable of emitting 960-1000nm, preferably 980nm laser to replace the laser generator capable of emitting 520-560nm laser device. 5. The therapeutic instrument according to claim 1, characterized in that, the therapeutic instrument also comprises: Power module, including battery and power detection unit; The display screen and control system, including: a communication unit for establishing short-range wireless communication, an execution unit for outputting a laser beam of a wavelength according to the execution request, and a touch display unit; Refrigeration system, corresponding to the laser generator settings; The laser pointer is used to irradiate the laser beam output by the laser generator to the area to be operated. 6. The therapeutic instrument according to claim 5, characterized in that, the therapeutic instrument also comprises: The foot switch establishes a wireless communication connection with the communication unit of the display screen and the control system, and is used to trigger the laser generator. 7. The therapeutic apparatus according to claim 5, characterized in that, The touch display unit is a 7-inch resistive touch screen.